JEE Advanced · Physics · 12. Thermal Properties
The figure below shows the variation of specific heat capacity () of a solid as a function of temperature (). The temperature is increased continuously from to at a constant rate. Ignoring any volume change, the following statement (s) is (are) correct to a reasonable approximation.
- A The rate at which heat is absorbed in the range varies linearly with temperature T.
- B Heat absorbed in increasing the temperature from is less than the heat required for increasing the temperature from.
- C There is no change in the rate of heat absorption in the range .
- D The rate of heat absorption increases in the range .
Answer & Solution
Correct Answer
(A) The rate at which heat is absorbed in the range varies linearly with temperature T.
Step-by-step Solution
Detailed explanation
R = rate of absorption of heat
(i) in
The graph between () appears to be a straight line upto a reasonable approximation.
(ii) as C is more in () then () so heat is increasing.
(iii) C remains constant so there no change in R from ()
(iv) C is increases so R is increases in range ()
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